I have read several places on this but the answers all seem to be the same. The problem is that I keep running out of space on my /data partition. The steps I've taken to fix this problem: move all apps that will function on sdcard to sdcard, also clear data on apps but the problem with this is that as soon as you open them again they act like a fresh install and then refill data.
My device stats 1gb /data partition 30gb 'internal' sdcard partition, Android 4.2.2 with root kernel 3.0.36+. Ideas I've had to fix this problem and the problems I faced attempting to use them:
Repartition some of the /sdcard space to /data, problem is I can't really find any specific instructions on how to do this and from what I have read I'm not really sure if I can because my "userdata" (/data) partition is at mtd6 and my "user" (/sdcard) partition is at mtd9 with "kpanic" and "system" at mtd 7 & 8 respectively, the guides mention mmc blocks instead of mtd which one seems to be an emulation of the other. I have seen other devices of the same model come from the factory with 2gb of /data storage.
Move the /data/data contents of an app to sdcard and bind mount that location, problem is these directories always contain a /lib link thats points to wherever the apps installed package location is and this link can't seem to be made, also not sure if I can make permissions right. As I understand it, when android installs an app to the sdcard it creates a small ext4 partition to contain the app package so I'm wondering if its possible to do something similar and then bind an apps /data/data assets to it.